Grooved refractory lining



Jan. 20, 1931. H R QRwlCK ET AL 1,789,474

GROOVED REFRACTQRY LINING Filed Oct. 24, 1929 2 SheetsJ-Sheet 1 fINVENTORS @i www@ Patented Jan; 20, 1931 1 i fenoovnn 'nnrnncmomrvitrivrne "Ihisfinventioni relates to linings or'elec tric furnaces andis' particlarlydirected toa grooved refractory liningffor suchfurnaces.

I i RveffactoryV linings 'for lelectric vfn'rna'ces, oi 5 various typesarei'of course,A old'and 'well lnnovvn perse. vSuch linings inthcfpastyhave; livvever, generally been n1ade -in one fl thefollowingways; erst; either by eamping in a plastic 'niass Within'vthefurnace which :hard `1.0 ens 'byfheatingfto form' anirr'emo'vable"lifn"` ying or, `second, ,by placing refractory' fbiji'cksv .i y Q'ITA'iShPeS in' theffurnace and then cerneiting thein ltogethervwith'suitable refractory cef nients.V The `irst type offlinng isvefygllf satisfactory because when lit ,f becomes Sworn;

Y lining is objectionable 'for thefsainevr reasons Y and alsobecauseioi' the liabilityof such ling ings to chip and crack'orburn outunder' sus@` tained high heat 'in the' furnace;vv These lin'- ingsiurthermore,dc not readily lend them-V selves to cooperationjyvith" other'linings 'of the saine por; different Ltypes as y there is L no Iyvayofsecring such'other liningsftherctof f One of the objects'ofthe'pres'ent'invention is to obvate thefditliculties anddisadvanL tagesinherent in lor arising from the use of linings of the above mentionedtypes and to provide avlining having 'advantages'peculiar toits ownconstruction..` v i i Y Another object of 'heinvention is to pro- Y videasimple, inexpensive, and easily manuactured lining for all'typeslofelectric furnaces Vwhich is readilyV accessible in" all'iits parts andWhich readily Vcooperates With other linings or similar or yothermaterialslf A. further objectofthe"invention-isf-'to provide a groovedlining for electricur- 40 naces.V i *Y y' v A stillfu'rther object ofthe invention is tof provide a lining .for electric furnaces hav- 'ingcorrugations or grooves. ofa particular kind and direction.

.114s .A .pfeferrea embodiment i eieiivptpn drawings -vvhereifnsim'ilai;l numerals refer to section the' einen@ drawingmn det-3.11,' L;.lining 10l has been 7illilstrated Whichconsists-'of two parts;

forming the body of theliningy fand the sections and changes tof other.types of electric Vfurnaces or,v in fact, to" any vtype of` electric jurnacewhich lvmaybe evolved-lin thejfuture f y'lllieV cylindrical 'bodyportion "11,' fas shown;y

f "coRUNDITE Rnrnnoronrns, 'Inca or infissinon,` onro, Aconronnmronorron`r-`ofV hasi.- est rimmed' a ne teammate 1eme-er1'pereehfeegheefiehe:several news; j

coniprises acylinder having one openv endf`12. 1 v

and onefclo'sediapertured;fend'13.y flheopenJ f end, which?,rnaygbeuterlned' 'the' upper one, 'is

will be more apparent helelalft'er.

closed; apertured end vbecause .of the,` factthat itl-Would be a solidend'w'all except kfor the A j preeeeeeef the eeetel; eperture 15Provide@ therein.v llnthe sideyval'lof the cylinder another aperture l1Q Vofi rectangular shape,-

-i'evideewithefehneelersreeve llexteed ies-irren@ eleendlehe uppereerfeee ,O ffhe 1 cylinder Wall. Vlhepurpose of this groove Theother endofthexcylinder 1s `terrnedga having ai tapered `extension I7 Jatone ofits sides, as shownparticularly. in Figs, l ZandE2.

of required shape tolgiveaccess to the interior of-theliningparticularlythroughfthe doorfin the furnace (not shown) Whichmay i p vcoincide therewith. v

lindrical portion-isgrooved as `at 18ct/herebyV Such an aperture asthi's inayvvellloe provided A Y The interior surfrceofithe vvall oftheen Y f increasing the area ofthe Wall and further-i more permitting itscooperation With other:

if ylinings ,or plastic materials which canbeforcedwhileplastic.into'the grooves. If the grooves :18 aremadeo'fadove-tail nature,

v Vfthatzirs, with inclined Walls so thatv the Wider f portion vofthegroove lays toward thejouter,`

[surface of the Wall of the cylinder, YitWilly be {seen} thattheVmoldable or plastic material which is'placed ,inthey groovesWillibeeffec- L tively?" grip'pedffzk 'sof' i yasf-to 1benond'splacable,

f tionsforpgrooves take a particular direction P @vide-part apli/ ivertialparallelrgroo s'18andextendffrom those points toward thejcenter'circui "larf'closed apertured end 131.51

rising ifromvthe'interior surfaceV thereof", near vof fthe-'1cylindrical `port y, Tl eina'terial 'ofswhich this liningk ismade eso'ffa suitable*reffactorygand preferred comV ositio'nconsistsofl'ZQgand'SiOgflThe pre erred proportion ofthese;-ingredientsisai @aproximar 702%1 Atos ;L and @mit mately130%jyl Ogalthoughi-t"willeappar 'fent thatthese percentagefsjjvcarri abflysvaried, if required;

above, Wecanf read-ily apply: to the"y grooves a v plastic or'Vm'oldzble-V mixture` whichy can i be i, tamped or pounded into thesame-and hence anohoredor attached tothelining inthe'rniabsolntelyyrequired, but aid's,*:h'ovvever,

i holdingithe Inoldable V1n'ixturefirmly"lin `p'ofsi `tion.,. Whenthenaturejgof the' operations ,vvhicl'lare `"carried out inelectric'furnacesis considered, theffact-will, befappreciated Vthen v lthat itis imperative that Ythe moldablemix- Y`tre stick jwell,foronlythenwill the greatest klining@The"groove 1'8"*A f inthecylindrical portion"-are:verticalgand?1 parallel and maybe s aced apartany desired 1 distance, the extent o gfthegroovsthemselvesA beingnaturally variable. -In the'v closedapaperture@ a iCevevfan 'mixture/ffl, ,e ,A

2. A refractory liningl consisting offafcy-V 125 andfluxing actionsvvhich ltend to destroy the i' With the lining of my invention, `themetal to be melted in the electric furnace may be'of many kinds and therefractory lining y With :thetamped in moldablemixture is lsuitable for'anything' that'v canV 'be smelted, Whereas inthe priorjknownconstructions, great limitations are placed upon'the furnaces since theykvvereynot constructedto 'stand up to or toiyv'ithstand'the zvariousactions ioccu'r-ring in an" "electric "'-fu'rnace,V `wherein'-divers'ematerials-are used.` Infact, With a lining like e p`resent, a;single Afurnace-Q can berused thout chang ,plaeego'f 'a' number lfif1fiir` 'ces which "always"l had 'to be' hitherto provided`forthez=gdiierent*kinds of smelting.

, arbe "he, lining ber adapted to, close fsaid' open, Bild and) havi,'lindricalcbody portion iandfa f- ,cover therefor, said body: portionhaving an; openend4 protrally apertured end', andfanapertirrewinfits:vw'fallgf':'saidfibotly` portion having; alsoffinterior 4 V13;)

therfwordrs; may licei:pred'etere'r The above disclosure is intendedtobe illus-A 1 1 'tr-ativerather@'thairriflimitative, as yWe maynais/meander@ e lectrrc'fur: f;

. parallel dove-tailed grooves, said closed apertured end g havinginterior dove-,tailed j' radial grooves connecting with the parallelgrooves aforesaid at the` cireurnferenceA of the closed end, and saideover having an l.an n i nular flange adapted to enter the annulary,groove in the open end `of the body portion Y and being provided. withradiali dove-tailed p grooves and a central opening, said grooves beingadapted to receivey andV retain a m'oldable mixture. Y

InY testimony whereof, We havevhereunto i set our names this 22ndlday ofOctober, 1929.

, HARRY R. ORWICK.

f EDWIN J.V-BoGNAR.: f 'A

